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Colorado News | Rare gem discovered in Colorado mine up for…
Wednesday, June 24th 2026

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Rare gem discovered in Colorado mine up for auction, bidding starts at $8,000

The rhodochrosite gemstone was discovered in Park County’s Sweet Home Mine in the 1990s

A rhodochrosite gemstone discovered at Colorado’s Sweet Home Mine in the 1990s could sell for thousands of dollars in an Friday, Oct. 18 Auction. (Photo courtesy of Heritage Auctions).
A rhodochrosite gemstone discovered at Colorado’s Sweet Home Mine in the 1990s could sell for thousands of dollars in an Friday, Oct. 18 Auction. (Photo courtesy of Heritage Auctions).
Lauren Penington of Denver Post portrait in Denver on Tuesday, Aug. 6, 2024. (Photo by Hyoung Chang/The Denver Post)
By | lpenington@denverpost.com
PUBLISHED: | UPDATED:
Getting your player ready...
A rare rhodochrosite gemstone discovered decades ago in Colorado's now-closed Sweet Home Mine could sell for thousands of dollars in an October auction.
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